20111210121112 has 32 divisors (see below), whose sum is σ = 41300456904000. Its totient is φ = 9105038980000.

The previous prime is 20111210121097. The next prime is 20111210121143. The reversal of 20111210121112 is 21112101211102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455229862 + ... + 455274037.

It is an arithmetic number, because the mean of its divisors is an integer number (1290639278250).

Almost surely, 2^{20111210121112} is an apocalyptic number.

20111210121112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20111210121112 is an abundant number, since it is smaller than the sum of its proper divisors (21189246782888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111210121112 is a wasteful number, since it uses less digits than its factorization.

20111210121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910504167 (or 910504163 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 20111210121112 its reverse (21112101211102), we get a palindrome (41223311332214).

The spelling of 20111210121112 in words is "twenty trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, one hundred twelve".